LG KG271, KG276 free download

File name LG KG271, KG276.pdf

Service Manual Internal Use Only Service Manual KG271/KG276 Model : KG271/KG276 Date: June, 2007 / Issue 1.0 Table Of Contents 1. INTRODUCTION ...5 4.13 Headphone Trouble ...75 1.1 Purpose ... 5 4.14 Charging Trouble ...77 1.2 Regulatory Information... 5 4.15 FM Radio Trouble ...79 2. PERFORMANCE...7 5. DOWNLOAD...82 2.1 H/W Features...7 5.1 Download Setup...82 2.2 S/W Features ...8 5.2 Download Process ...83 3. TECHNICAL BRIEF ...14 6. BLOCK DIAGRAM ...88 3.1 Digital Main Processor(PMB7880)...14 7. Circuit Diagram ...89 3.2 Power Amplifier Module (SKY77318) ...22 3.3 26 MHz Clock (DCXO)...24 8. PCB LAYOUT ...93 3.4 RTC(32.768KHz Crystal) ...25 9. ENGINEERING MODE ...95 3.5 LCD Interface(3-wire SPI interface) ...26 3.6 SIM Card Interface...28 9.1 About Engineering Mode ...95 3.7 KEYPAD Interface ...29 9.2 Access Codes ...95 3.8 Battery Charging Block Interface ...30 9.3 Key Operation ...95 3.9 RF Interface ...31 9.4 Engineering Mode Menu Tree ...95 3.10 Audio Interface...33 10. CALIBRATION ...92 3.11 Key LED Interface...37 10.1 Test Equipment Setup ...92 3.12 Vibrator Interface ...38 10.2 Calibration Steps...